Balancer device for internal combustion engine
US-2020063612-A1 · Feb 27, 2020 · US
Balancer structure for internal combustion engine, and internal combustion engine
US11927239B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11927239-B2 |
| Application number | US-202318176575-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 1, 2023 |
| Priority date | Apr 13, 2022 |
| Publication date | Mar 12, 2024 |
| Grant date | Mar 12, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
A balancer structure for an internal combustion engine and the internal combustion engine are provided. A transmission driving gear are arranged to be rotatable integrally with a crankshaft. A transmission driven gear is arranged to be rotatable integrally with a first balance shaft. The transmission driven gear meshes with the transmission driving gear. A balancer driving gear is arranged to be rotatable integrally with the first balance shaft. A balancer driven gear is arranged to be rotatable integrally with the second balance shaft. The balancer driven gear meshes with the balancer driving gear. The first balance shaft includes an output portion. The output portion outputs torque to an engine-driven accessory.
First claim
Opening claim text (preview).
The invention claimed is: 1. A balancer structure for an internal combustion engine, the balancer structure comprising: a first balance shaft that extends in a direction along a crankshaft of the internal combustion engine; a second balance shaft that extends in the direction along the crankshaft; a first balancer weight arranged to be rotatable integrally with the first balance shaft; a second balancer weight arranged to be rotatable integrally with the second balance shaft; a transmission driving gear arranged to be rotatable integrally with the crankshaft; a transmission driven gear arranged to be rotatable integrally with the first balance shaft, the transmission driven gear meshing with the transmission driving gear; a balancer driving gear arranged to be rotatable integrally with the first balance shaft; a balancer driven gear arranged to be rotatable integrally with the second balance shaft, the balancer driven gear meshing with the balancer driving gear; and an output portion arranged on the first balance shaft, the output portion outputting torque to an engine-driven accessory. 2. The balancer structure for the internal combustion engine according to claim 1 , wherein a diameter of the balancer driving gear and a diameter of the balancer driven gear are smaller than a diameter of the transmission driving gear. 3. The balancer structure for the internal combustion engine according to claim 2 , wherein the balancer driving gear is arranged such that the transmission driven gear is located between the balancer driving gear and the output portion in a direction in which the first balance shaft extends. 4. The balancer structure for the internal combustion engine according to claim 1 , wherein the accessory is an oil pump, and the first balance shaft outputs torque to the oil pump through the output portion. 5. An internal combustion engine, comprising: a crankshaft; a first balance shaft that extends in a direction along the crankshaft; a second balance shaft that extends in the direction along the crankshaft; a first balancer weight arranged to be rotatable integrally with the first balance shaft; a second balancer weight arranged to be rotatable integrally with the second balance shaft; a transmission driving gear arranged to be rotatable integrally with the crankshaft; a transmission driven gear arranged to be rotatable integrally with the first balance shaft, the transmission driven gear meshing with the transmission driving gear; a balancer driving gear arranged to be rotatable integrally with the first balance shaft; a balancer driven gear arranged to be rotatable integrally with the second balance shaft, the balancer driven gear meshing with the balancer driving gear; and an output portion arranged on the first balance shaft, the output portion outputting torque to an engine-driven accessory.
Assignees
Inventors
Classifications
- F16F15/265Primary
Arrangement of two or more balancer shafts (F16F15/267 takes precedence) · CPC title
using lubricating pumps (pumps in general F04; lubricating pumps per se F16N) · CPC title
driven by a balancer shaft · CPC title
Inertia · CPC title
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Frequently asked questions
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- What does patent US11927239B2 cover?
- A balancer structure for an internal combustion engine and the internal combustion engine are provided. A transmission driving gear are arranged to be rotatable integrally with a crankshaft. A transmission driven gear is arranged to be rotatable integrally with a first balance shaft. The transmission driven gear meshes with the transmission driving gear. A balancer driving gear is arranged to b…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16F15/265. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 12 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).